What size hopping ball does my child need? To find the safest and most comfortable hopping ball, choose a diameter that allows your child to sit squarely on the top of the ball with both of their feet planted flat on the ground and their knees bent at a 90-degree angle.
A hopping ball (also known as a hopper ball, space hopper, or bouncy ball with handles) is a fantastic tool for burning off endless energy, building core strength, and improving balance. However, if the ball is too big, your child won't be able to push off the ground safely. If it is too small, they will bump their knees and struggle to get a good bounce.
If you are unsure which size to order, use this comprehensive sizing guide to get the perfect fit for your active kid.
While age is a helpful starting point, height is the most accurate metric for choosing a hopper ball. Kids grow at different rates, so always check their height against the ball's diameter.
| Ball Diameter (Inches) | Ball Diameter (Centimeters) | Suggested Age Range | Child's Height |
| 15 - 18 Inches | 38 - 45 cm | 3 to 5 Years Old | Under 3' 5" (104 cm) |
| 20 - 22 Inches | 50 - 55 cm | 6 to 9 Years Old | 3' 5" to 4' 5" (104 - 135 cm) |
Once the ball is inflated, you should do a quick posture check before they start bouncing around the yard. Have your child sit on the very top center of the ball while holding the handles.
Check for these three signs of a perfect fit:
Flat Feet: Both feet should rest entirely flat on the floor. If they are on their tiptoes, the ball is too large and presents a tipping hazard.
The 90-Degree Knee: Their knees should be bent at roughly a 90-degree angle. If their knees are tucked up near their chest, the ball is too small and will limit their bounce height.
Straight Posture: They should be able to sit up straight without hunching over uncomfortably to reach the handle.
Yes! One of the best things about hopping balls is that you have a small margin of adjustability based on how much air you pump into them.
If your child is right on the borderline between two sizes (for example, they are exactly 3' 5" tall), it is usually best to size up to the 20-22 inch ball. You can slightly under-inflate the larger ball to bring it closer to the ground. As your child grows over the next few months, you can gradually add more air to keep the height perfectly aligned with their legs.
Ready to get them bouncing? Explore Xino Sports' collection of durable, premium hopping balls designed for high-flying fun, maximum safety, and active play!
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